WO1990011069A1 - Procede de preparation de compose ligand-recepteur - Google Patents
Procede de preparation de compose ligand-recepteur Download PDFInfo
- Publication number
- WO1990011069A1 WO1990011069A1 PCT/FR1990/000176 FR9000176W WO9011069A1 WO 1990011069 A1 WO1990011069 A1 WO 1990011069A1 FR 9000176 W FR9000176 W FR 9000176W WO 9011069 A1 WO9011069 A1 WO 9011069A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- product
- galactose
- ligand
- rhamnose
- phosphate
- Prior art date
Links
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Classifications
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
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- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/14—Liposomes; Vesicles
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- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/60—Sugars; Derivatives thereof
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
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- A61K9/127—Synthetic bilayered vehicles, e.g. liposomes or liposomes with cholesterol as the only non-phosphatidyl surfactant
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- A61K9/127—Synthetic bilayered vehicles, e.g. liposomes or liposomes with cholesterol as the only non-phosphatidyl surfactant
- A61K9/1271—Non-conventional liposomes, e.g. PEGylated liposomes or liposomes coated or grafted with polymers
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- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q7/00—Preparations for affecting hair growth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y5/00—Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
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- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
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- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
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- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
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- A61K2800/65—Characterized by the composition of the particulate/core
- A61K2800/654—The particulate/core comprising macromolecular material
Definitions
- the present invention essentially relates to a process for fixing a product on the membrane of a keratinocyte by means of a ligand-receptor bond, process for the preparation of such a product, product obtained, cosmetic composition. or pharmaceutical container and its preparation process.
- liposomes have been used as vectors drug or other active ingredient (see for example FR-A-2 221 122 or FR-A-2 415 460 or FR-A-2 540 381).
- Document FR-A-2 609 397 relates to the use of a substance or composition of a carbohydrate nature as the active principle of a dermatological, or cosmetological, or pharmaceutical, or cellular stimulant composition, with the aim of strengthening the cellular bioenergetic potential or tissue (see claim 1) or to improve skin comfort, thanks to their moisturizing, softening, softening effect (page 3, line 33 to page 4, line 10; where an anti-inflammatory action is even indicated).
- This document therefore relates to general education which is not related to the particular problem of keratinocytes.
- Document PCT / W0 87/05300 BIOCOMPATIBLES LTD relates to a process for preserving a material having a structure dependent on water, comprising bringing the material into contact with an aqueous solution of a polyhydroxy compound and then removing the water of this material, this in order to allow a long term conservation of biological materials such as hemoglobin, erythrocytes, liposomes and cells (see page 1, lines 1 to 4).
- WO 88/00474 describes a lipid membrane structure comprising a lipid vesicle encapsulating a medicament, and a ligand comprising a specific residue. hepatobiliary receptors, in order to achieve a control of the structure towards the hepatocytes with exceptional efficiency.
- EP-A-0 285 178 relates to mannobiose derivatives useful as a modification component of pharmaceutical preparations, such as liposomes, having a specific affinity for Kupffer cells of the liver.
- this document recommends a specific culture of keratinocytes to activate them in order to activate their capacity to multiply on all substrates coated with ligands.
- patent application PCT / W0 86/05789 BIOCARB also relates to hydrocarbon derivatives within the framework of specific targeting for a therapeutic or diagnostic purpose, this targeting being carried out on molecules of organs different from mammals including humans (see page 1, lines 4 to 8).
- rhamnose, galactose and galactose-6-phosphate are ligands specific for receptor sites of the keratinocyte membrane. It was further observed that the ⁇ - rhamnose and ⁇ - -galactose-6-phosphate have a specificity
- the product carrying this sugar forming a ligand specific for receptors of the keratinocyte membrane could be in various forms. It can be, for example, a submicroscopic particle, such as a liposome or a polymer nanoparticle, or even a molecule or a macromolecule of natural or synthetic origin, such as a protein.
- the ligand-forming sugar can be coupled in various ways to the surface of this product. It can be advantageously coupled by a covalent chemical bond, preferably by means of a spacer arm.
- the object of the present invention is to solve the new technical problem consisting in providing a solution making it possible to specifically fix a product on the membrane of keratinocytes by means of a ligand-receptor bond, if necessary to the detriment of other categories of cells surrounding keratinocytes.
- the object of the present invention is to solve the above new technical problem according to an extremely simple, rapid, practical and reliable method.
- the present invention also aims to solve this new technical problem by providing a method of selecting a product capable of specifically binding to the membrane of a keratinocyte by means of a ligand-receptor bond which is particularly simple, rapid, practical. and reliable.
- Another object of the present invention is to solve the aforementioned new technical problem by providing a process for the preparation of such a product capable of being specifically fixed on the membrane of a keratinocyte by means of a ligand-receptor bond which is as simple, rapid. , practical and reliable.
- the present invention also aims to solve the aforementioned new technical problem by providing a product capable of being specifically fixed on the memoran of a keratinocyte by means of a ligand-receptor bond which is in a form which is particularly easy to handle, which is reliable and can be used quickly without requiring special steps.
- the Another object of the present invention is to solve the aforementioned new technical problem by providing a cosmetic or pharmaceutical, in particular dermatological, composition and its preparation process, incorporating such a specific product which has all of the aforementioned determining technical advantages relating to the reliability of the specific fixation. on the membrane of a keratinocyte by means of a ligand-receptor bond according to a rapid, practical method.
- the present invention solves the aforementioned technical problem by providing the aforementioned solutions in an extremely simple manner, usable on an industrial scale.
- the present invention provides a method for fixing a product on the memoran of a keratinocyte by means of a ligand-receptor bond, characterized in that a product consisting of a structure is used.
- base coupled to at least one ligand consisting of an osidic residue accessible to membrane receptors, said osidic residue being chosen from rhamnose, galactose and galactose-6-phosphate, and preferably from ⁇ --rhamnose and ⁇ - -galac tose-6-pnosphate.
- the invention includes all the isomeric forms of rhamnose and galactose.
- the ligand is coupled to the surface of said basic structure by a covalent chemical bond.
- the ligand is coupled to the surface of the above-mentioned basic structure by means of a spacer arm such as the residue of a heterobifunctional reagent or a group of several sugars, such that the group (1-4) -o- ⁇ - D-glucopyranosyl- (1- 6) -o- ⁇ -D-glucopyranosyl.
- a spacer arm such as the residue of a heterobifunctional reagent or a group of several sugars, such that the group (1-4) -o- ⁇ - D-glucopyranosyl- (1- 6) -o- ⁇ -D-glucopyranosyl.
- the above-mentioned product is a submicroscopic particle such as a liposome or a polymeric nanoparticle.
- the above-mentioned product is a molecule or a macromolecule of natural or synthetic origin, such as
- an asiaticoside containing the ⁇ - -rhamnose extracted in particular from the plant Centella asiatica, available for example from Inverni Délia Beffa,
- a digalactosyldiglyceride obtained in particular from an extract of wheat flour, available for example from Sigma, - a neoglycoprotein obtained for example by combining a serum albumin (SA) for example bovine or human with aforementioned sugar.
- SA serum albumin
- the aforementioned product is or contains a substance of cosmetic or pharmaceutical interest, in particular dermatological, such as an agent modulating the metabolism of skin cells.
- the present invention also provides a method for selecting a product intended to be fixed on the membrane of a keratinocyte by means of a ligand-receptor bond, characterized in that one chooses, from among a set of products, those consisting of a basic structure coupled to at least one ligand constituted by an osidic residue accessible to receptors, said osidic residue being chosen from rhamnose, galactose or ga lactose-6-phosphate, preferably ⁇ - rhamnose and ⁇ -galactose-6-phosphate.
- the present invention also provides a process for the preparation of a product intended to be fixed to the membrane of a keratinocyte by means of a ligand-receptor bond, characterized in that a structure is coupled corresponding base one at least one ligand consisting of an osidic residue accessible to membrane receptors, said osidic residue being chosen from rhamnose, galactose and galactose-6-phosphate, preferably ⁇ -L-rhamnose and ⁇ -D-galac tose-6-phosphate.
- the above-mentioned ligand is coupled to the basic structure by a covalent chemical bond.
- the coupling can be carried out in accordance with the general method described by Mac Broom in Methods in Enzymology (1972) 28, 212-222 or also that described by FJ Martin and D. Papahadjoloupos in The Journal of Biological Chemistry (1982), vol 257, n ° 1, pages 286-288.
- the aforementioned ligand is coupled to the basic structure by means of a spacer arm as defined above.
- the basic structure is a submicroscopic particle such as a liposome or a polymeric nanoparticle.
- the abovementioned basic structure is a molecule or a macromolecule of natural or synthetic origin, such as a protein, for example a serum albumin.
- the aforementioned product is or contains a substance of cosmetic or pharmaceutical interest, in particular dermatological, such as an agent modulating the metabolism of the cells of the water.
- the invention also covers a product intended to be fixed on the membrane of a keratinocyte by means of a ligand-receptor bond, characterized in that it is obtained according to one of the previously defined methods .
- the invention also covers new products capable of binding to the membrane of a keratinocyte by means of a ligand-receptor bond, characterized in that they comprise at least one ligand consisting of an osidic residue accessible to membrane receptors , said osidic residue being chosen from rhamnose, galactose and galactose-6-phosphate and preferably ⁇ - -rhamnose and ⁇ -
- this coupling takes place via a spacer arm such as the residue of a heterobifunctional reagent or a group of several sugars, such as the group (1-4) -o- ⁇ - -glucopyranosyl - (1-
- the present invention also provides a cosmetic or pharmaceutical composition, in particular a dermatological composition, characterized in that it contains at least one product as obtained by the process previously described or as previously defined.
- the aforementioned composition is intended for any care or any treatment of interest to keratinocytes, for example the improvement of skin regeneration, the treatment of psoriasis or hair regrowth.
- the invention also relates to a process for the preparation of a cosmetic or pharmaceutical composition, in particular a dermatological composition, characterized in that at least one product such as a cosmetically or pharmaceutically acceptable excipient, vehicle or support is associated that obtained by one of the methods previously described, or as previously defined.
- the invention also covers a process for the care or treatment of keratinocytes, for example with a view to skin regeneration, the treatment of psoriasis or hair regrowth, characterized in that the product is applied as previously obtained by one of the methods previously described, or as previously defined, in a cosmetically or therapeutically effective amount, advantageously while the latter is associated with a cosmetically or pharmaceutically acceptable vehicle, supoort or excipient.
- cell targeting of a product is obtained which can thus be specifically concentrated at the level of keratinocytes thanks to the presence at least one specific ligand consisting of the osidic residue chosen from rhamnose, galactose and galactose-6-pnosphate, preferably ⁇ - -rhamnose and ⁇ - -galactose-6-phosphate.
- the product to which the product is coupled the specific ligand constituted by the osidic residue may be any.
- the number of osidic residues as defined above carried by the protein is at least about twenty.
- lipid vesicle which can be in the form of a liposome.
- lipid covers all substances comprising a so-called fatty carbon chain, generally greater than 5 carbon atoms, this substance usually being called "lipid".
- ampnionile lipids are used as lipid to form the abovementioned liposome, that is to say made up of molecules having a hydrophilic group either ionic or nonionic and a lipophilic group, these amphiphilic lipids being susceptible to form lipid lamellar phases or liposomes in the presence of an aqueous phase.
- lipids phospholipids, phosphoaminolipids, glycolipids. polyoxyethylenated fatty alcohols, esters of polyols optionally polyoxyethylenated.
- Such substances are, for example, constituted by an egg or soy lecithin, a phosphatidylserine, a sphyngomyelin, a cerebroside or an oxyethylenated polyglycerol stearate.
- the liposomes are formulated so as to have a high microviscosite.
- This can for example be obtained by using amphiphilic lipids whose transition temperature is higher than approximately 37oC and preferably 41oC, in particular phospholipids or saturated fatty acids, for example dipalmitoyl phosphatidylcholine.
- a polymeric nanoparticle generally of di mens i on i nfé ri eu re mi mi mi rom rom er, preferably polymer nanoparticles comprising NH 2 groups, alcohol functions or or thiol functions allowing easy coupling with the osidic residue according to the invention.
- biodegradable nanoparticles such as polylactates
- Such particular particles comprising NH 2 groups are commercially available, for example from Interfacial Dynamics Corporation (Portland, Oregon-USA).
- the osidic residues coupled to the surface of said polymeric nanoparticles are chosen from the residues of ⁇ -D- galactose, ⁇ - L-rhamnose and ⁇ -D-galactose-6-phosphate.
- porous nanoparticles can be used to encapsulate the active substances.
- the basic products such as the aforementioned liposomes or nanoparticles, contain one or more substances of cosmetic or pharmaceutical interest, especially dermatological, such as an agent for modulating cell metabolism of the skin, for example peptides obtained by hydrolysis of proteins, modulators of enzymatic activity, for example a xanthine such as theophylline.
- dermatological such as an agent for modulating cell metabolism of the skin, for example peptides obtained by hydrolysis of proteins, modulators of enzymatic activity, for example a xanthine such as theophylline.
- the basic product which can be used according to the invention can also be the active substance itself of cosmetic or pharmaceutical interest, in particular dermatological interest.
- PPITC- ⁇ - -rhamnopyranoside is prepared from p-
- DPPE is dissolved mole to mole with PPITC- ⁇ - -rhamnopyranoside at 50oC in a mixture consisting of bicarbonate buffer (0.1 M, pH 9.5) and ethanol. The temperature is maintained at 50oC for 3 h, with stirring. The reaction medium is then cooled to approximately 4oC, and centrifuged.
- DPPE-Rha rhamnosylated DPPE
- This aqueous solution can, for example, contain a fluorescent marker consisting, for example, of the potassium salt of 5- (6) -carboxyfluorescein in an amount of 8 g per 40 ml of distilled water.
- blue calcein can also be used in an equivalent manner.
- the mixture After adding 10 ml of the aqueous solution to be encapsulated above, the mixture is placed under magnetic stirring for 15 to 24 hours, protected from light.
- the contents of the flask are collected in a 30 ml container cooled in melting ice.
- the suspension is subjected to sonication three times at 2 min at 4oC at a power of 200 W, which allows form liposomes of substantially homogeneous size, of submicroscopic dimension.
- the liposomal suspension thus obtained can be stored at 4 ° C.
- purification of the liposomes is carried out by separating them from the non-encapsulated aqueous phase by gel filtration, as is well known according to the conventional liposome purification protocol.
- an “activated sugar” of formula (I) is prepared, as indicated below, consisting of a residue ⁇ - -rhamnopyranosyle, in which the OH group located on the first carbon is substituted by a straight chain terminated by an SH group.
- the derivative (2) is obtained according to KEMPEN H.J.M. et al.,
- the derivative (3) is obtained according to CHIPOWSKY S. et al.,
- the product (4) is obtained by equimolecular reaction between the derivative (3) and 3-iodopropionic acid in solution in a water / acetone mixture 1: 1 in the presence of 1.15 eq. of Na 2 CO 3 and 2 eq. of Na 2 S 2 O 5 .
- the reaction is followed by TLC (solvent AcOEt / AcOH / H 2 O 8: 2: 1).
- the derivative (5) is obtained by deacylation of (4) in the presence of 4 eq. of triethylamine and 3 eq. of water in methane.
- the reaction is followed by TLC (solvent AcOEt / AcOH / H 2 O 8: 2: 1); it is complete after 6 days.
- the deacetylation product is isolated from the reaction medium by passage through a Dowex 1x2 column (HCOO-).
- the product (7) is obtained by equimolecular reaction between the derivative (6) and succinimidyl-S-acetylthioacetate (SATA, synthesis according to Ducan et al. Anal. Biochem. (1983) 132 68-73) in presence of triethylamine (1 eq) in anhydrous dimethylformamide.
- SATA succinimidyl-S-acetylthioacetate
- the product (7) obtained is used in the rest of the operations without any particular purification.
- liposomes are prepared according to a conventional method, for example as in Example 1.
- the composition of the lipid phase is a mixture in 10: 2: 7 molar proportion of the following compounds:
- MPB-DPPE is a phosoholipid carrying a maleimide group, prepared according to the method described by Martin F.J. and
- the mixture is placed under an argon atmosphere, with gentle stirring for 12 h at ordinary temperature.
- the thiol function of the compound of formula (I) is then fixed by addition reaction on the double bond of the maleimide group.
- Liposomes are thus obtained comprising on the surface rhamnosylated residues located at the end of a chain of atoms (spacer arm) corresponding to the chain of the compound of formula (I).
- composition of the lipid phase is a mixture in 4: 4: 1: 1 molar proportion of the following compounds:
- the asiati coside is extracted from the plant Centella asiatica, available for example from Inverni Délia Beffa, of formula L-asiatate of [(0- ⁇ -L-rhamnopyranosyl- (1-4) -o- ⁇ -D-glucopyranosyl- (1-6)] -
- the constituents of the above lipid phase are dissolved at a concentration of approximately 10% in an 80:20 by volume mixture of di chloromethane and methanol.
- the organic solution is atomized at around 60oC according to the process described in document EP-B1-0087993 to obtain a powder.
- This powder is then dispersed by stirring in the aqueous solution to be encapsulated, in a proportion of 1 part of powder for
- aqueous solution 100 parts of aqueous solution.
- This solution can for example contain a fluorescent label such as 5- (6) carboxyfluorescein, as in Example 1.
- a liposome suspension is thus formed which is preferably homogenized, for example by means of a pressurized homogenizer as described in document EP-B1-0107559.
- a suspension of liposomes comprising on the surface rhamnosylated residues, connected to the bilayer by spacer arms constituted by the residue (1-4) -o- ⁇ - -glucopyranosyl- (1-
- Example 5 The procedure is as in Example 1, except that the digalactosyldiglyceride, wheat flour extract, available for example from Sigma and comprising at the end of the molecule two galactosy les residues, is used, instead of the product according to the invention used in Example 1.
- Example 5 according to the invention
- Nanoparticles can be obtained commercially in the form of beads with an average diameter of approximately 0.5 ⁇ m consisting mainly of polystyrene, and having NH 3 + groups on the surface. Such nanoparticles are available for example from Interfacial Dynamics Corporation (IDC, Portland, Oregcn, USA).
- Nanoparticles are thus obtained comprising rhamnosylated residues on the surface.
- a protein for example bovine serum albumin, BSA, to which around twenty units of rhamnose are coupled, thereby obtaining a neoglycoprotein.
- BSA bovine serum albumin
- BSA-rhamnosy lée This neoglycoprotein called BSA-rhamnosy lée is obtained as follows by taking inspiration from the method described by MacBroon et al. in Methods in Enzymology, (1972) 28 212-222.
- Example 1 in 2 ml of a 0.15 M aqueous NaCl solution and 300 g of BSA are added. The pH is adjusted to 9.0 with NaOH (1 N). After 6 h with stirring at room temperature, the reaction mixture is dialyzed for 16 h at 4 ° C. against 2 l of 0.15 M NaCl pH 7.0. The BSA-rhamnosy is further purified by passage through a Sephadex G25 column (10 ml of presaturated BSA gel, on a 0.5 x 20 cm column).
- p-aminophenyl-6-phospho- ⁇ -D-galactopyranoside is prepared, from commercial p-nitrophenyl- ⁇ - -galactoside, according to the process described by GN SAIMDO and EM KARSON in Biochemistry (1980) vol. 19 No. 16 pages 3850-3855, by phosphorylation using phosphoryl chloride, followed by hydrogenation.
- PPITC-6-phospho ⁇ - -galactopyranoside (PPITC-G) is prepared according to the method of the example
- bovine serum albumin (BSA) are incubated in the presence of 62 mg of PPITC-G, prepared in the preceding step, operating as in Example 6.
- BSA is thus coupled coupled with about twenty 6-phospho- ⁇ - -galactoside residues.
- Example 1 we proceed to Example 1, except that we use instead of DPPE-Rha, a molecule of natural origin already carrying a glucosyl residue, consisting of the sericoside extracted from the roots of Terminalia sericea available for example from Inverni Délia Beffa.
- DPPE-Rha a molecule of natural origin already carrying a glucosyl residue, consisting of the sericoside extracted from the roots of Terminalia sericea available for example from Inverni Délia Beffa.
- the specificity of the products according to the invention carrying osidic ligands with respect to the keratinocyte membrane could be determined thanks to the use fluorescent neoglycoproteins synthesized by the inventors whose endocytosis can be observed by various techniques. It should be observed that endocytosis is all the more important as the binding is specific at the level of the cell membrane, so that the observation of endocytosis indirectly measures the specificity of the binding of the products according to the invention. These various techniques include:
- F26 normal human fibroblasts
- HSC human tumor keratinocytes
- the culture media come from EUROBIO and are as follows:
- MEM basic Eagle medium
- DMEM Dulbécco
- the culture conditions are as follows:
- the keratinocytes are cultured on glass slides which serve as a support.
- the culture is carried out in Petri dishes diameter 60 mm
- Fluorescence microscopy allows the study of cells in situ. It is possible to locate the parts of the cell where the fluorescent compounds preferentially attach.
- the substances tested are neoglycoproteins synthesized from BSA by reaction with a glycosido-p-phenylisothiocyanate, according to Example 6 or, where appropriate, Example 7 when a phosphate sugar is desired. Then, these neoglyco-proteins are made fluorescent by reacting them with fluorescein p-phenylisothiocyanate.
- a Zeiss ® microscope equipped with "epifluorescence".
- the excitation is done by a light of wavelength selected by a filter.
- a second filter lets in the light emitted only for wavelengths between 520 and 560 mm.
- Cells grown on coverslips are labeled with a neoglycoprotein as follows.
- the medium is replaced in the keratinocyte culture dishes by a solution of neoglycoprotein in a PBS buffer at a concentration of 1 mg / ml. It is left to incubate for 2 hours at 32oC.
- PBS buffer at 4oC
- paraformaldehyde The same is done with fluorescent BSA as a control substance.
- the plasma membrane is permeabilized using a detergent, such as Nonidet P40 ® available from SIGMA. This permeabilization makes it easier to access internal membranes to fluorescent products, which makes it possible to highlight sugar receptors inside the cell.
- a detergent such as Nonidet P40 ® available from SIGMA.
- V mb vesicles at the level of the membranes
- V c vesicles in the cytoplasm
- the cells cultured in 60 mm diameter petri dishes having reached confluence are brought into contact with the products according to the invention comprising at least one osidic ligand.
- these products according to the invention carrying osidic ligands are incorporated into the lipid phase of the liposomes and are found on the surface of the liposomes with the ligandsosides freely accessible from the outside.
- the potassium salt of 5- (6) -carboxyfluorescein [5- (6) -CF] is used.
- the endocytosis of the different types of liposomes is compared by measuring the 5- (6) -CF incorporated in each cell.
- composition DPPC / DCP / chol
- Composition SER. / DPPC / DCP / choL
- Each liposomal suspension purified on a column is diluted 1/2 in culture medium.
- the blank is produced with culture medium. .
- the Petri dishes are placed in an oven (37 ° C) for 1 h 30 min.
- the dishes are rinsed twice with 5 ml of buffer
- the cells are detached from the plastic support for fibroblasts: 0.25% trypsin
- keratinocytes 0.25% trypsin + 0.02% EDTA. The cells are recovered and centrifuged at 1,500 rpm
- the suspension is filtered on a blanket cloth (pore diameter: 60 ⁇ m) to remove the aggregates.
- the measurements are carried out using a flow cytofluorimeter (EPICS Profile Coultronics) using an excitation wavelength ⁇ ex of 488 nm. Emission wavelengths
- cell size f (cell density makes it possible to define the cell population (A)).
- the liposomes exhibiting rhamnose referenced PE-Rha are endocyted more quickly than the liposomes having glucose of the sericoside molecule referenced SER.
- the endocytosis of the liposomes containing the asiaticoside referenced C.A. is more important than that of PE-Rha.
- the fibroblasts are cultured as previously described.
- keratinocytes better endocytize liposomes having in their membrane composition molecules comprising a rhamnose, galactose or galactose-6-phosphate ligand. Furthermore, we observe that the ⁇ - -rhamnose and ⁇ - -galactose-6-phosphate have a
- fibroblasts are indifferent to these molecules as well as to the structure of the glucose carried by the sericoside. It must therefore be concluded that products according to the invention comprising at least one osidic residue consisting of rhamnose, galactose or galactose-6-phosphate and more particularly ⁇ -L-rhamnose and ⁇ -D-galactose -6-phosphate can be attached
- the cream is obtained by mixing an emulsion and a gelled suspension of liposomes of the following compositions: emulsion:
- a gelled suspension of liposomes is prepared as follows.
- the liposomes are prepared as indicated in Example 1.
- the constituents of the lipid phase (DPPC, chol, DPC, DPPE-rhamnose) are dissolved in a chloroform-methanol 7: 1 mixture.
- the organic solution thus obtained is evaporated under reduced pressure, then the lipid residue is taken up in 49 g of an aqueous solution containing the substances to be encapsulated (elastin polypeptides, and calf thymus hydrolyzate prepared, for example according to the process described in document FR-A1-2 594 847).
- an aqueous solution containing the substances to be encapsulated elastin polypeptides, and calf thymus hydrolyzate prepared, for example according to the process described in document FR-A1-2 594 847.
- This cream is applied daily to the skin of the face and neck.
- a lipid powder is prepared according to Example 3 by spraying a solution into an 8: 2 dichloromethane-methanol mixture containing the lipid or hydrophobic constituents (DPPC, chol, DCP, C.A.) and 0.5 g of theophylline.
- This powder is then dispersed in 50 ml of a solution containing 0.5 g of theophylline, by stirring, followed by homogenization with ultrasound, according to the method known to those skilled in the art.
- the lotion thus obtained can be used in local applications for the treatment of psoriasis, twice a day, until the lesions disappear.
- Example 11 The procedure is as in Example 11, except that the lipid powder does not contain theophylline.
- This powder is dispersed in 50 ml of an aqueous solution containing 5 g of placental extract and 0.1 g of sodium pantothenate, then gelled with the sufficient amount of stabilized carbomer gel to obtain a final weight of 100 g of lotion .
- this lotion improves the health of the hair bulb and stimulates hair growth.
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Abstract
Description
Claims
Priority Applications (2)
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DE69006496T DE69006496T2 (de) | 1989-03-20 | 1990-03-16 | Verfahren zur herstellung eines ligand-rezeptor-komprexes. |
CA002056357A CA2056357C (fr) | 1989-03-20 | 1990-03-16 | Procede de preparation d'un complexe ligand-recepteur |
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Application Number | Priority Date | Filing Date | Title |
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FR89/03628 | 1989-03-20 | ||
FR8903628A FR2645741B1 (fr) | 1989-03-20 | 1989-03-20 | Procede pour fixer un produit sur la membrane d'un keratinocyte au moyen d'une liaison ligand-recepteur, procede de preparation d'un tel produit, produit obtenu, composition cosmetique ou pharmaceutique le contenant et son procede de preparation |
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WO1990011069A1 true WO1990011069A1 (fr) | 1990-10-04 |
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PCT/FR1990/000176 WO1990011069A1 (fr) | 1989-03-20 | 1990-03-16 | Procede de preparation de compose ligand-recepteur |
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US (1) | US5286629A (fr) |
EP (1) | EP0464077B1 (fr) |
JP (1) | JP2856547B2 (fr) |
CA (1) | CA2056357C (fr) |
DE (1) | DE69006496T2 (fr) |
ES (1) | ES2051013T3 (fr) |
FR (1) | FR2645741B1 (fr) |
WO (1) | WO1990011069A1 (fr) |
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WO1993014767A3 (fr) * | 1992-02-04 | 1993-09-02 | Innovi Nv | Preparation pharmaceutique a base de rhamnolipides utilisee pour traiter les maladies dermatologiques, par exemple, les infections du virus du papillome |
EP0566368A3 (en) * | 1992-04-15 | 1994-01-12 | Unilever Plc | Cosmetic conjugate |
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JP3321622B2 (ja) | 1991-02-14 | 2002-09-03 | バクスター・インターナショナル・インコーポレイテッド | 生体接着性リポソームの外用による持続的薬物放出 |
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WO1987005300A2 (fr) * | 1986-02-28 | 1987-09-11 | Biocompatibles Limited | Conservation de proteines |
FR2609397A1 (fr) * | 1988-02-23 | 1988-07-15 | Serobiologiques Lab Sa | Utilisation d'une substance ou composition de nature glucidique comme principe actif d'une composition dermatologique et/ou cosmetologique et/ou pharmaceutique et/ou stimulante cellulaire, et composition contenant une telle substance ou composition de nature glucidique |
EP0285178A2 (fr) * | 1987-04-03 | 1988-10-05 | Meito Sangyo Co., Ltd. | Dérivés de mannobiose |
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US3969540A (en) * | 1975-09-11 | 1976-07-13 | Albion Laboratories, Inc. | Enzymatically prepared metal proteinates |
US4508693A (en) * | 1983-11-29 | 1985-04-02 | Shell Oil Co. | Solution removal of HCN from gaseous streams, with pH adjustment of reacted solution and hydrolysis of thiocyanate formed |
ATE54826T1 (de) * | 1985-10-23 | 1990-08-15 | Mulli Kurt Nachf Gmbh | Thymusextraktfraktionen enthaltende pharmazeutische zusammensetzung. |
-
1989
- 1989-03-20 FR FR8903628A patent/FR2645741B1/fr not_active Expired - Fee Related
-
1990
- 1990-03-16 EP EP90904856A patent/EP0464077B1/fr not_active Expired - Lifetime
- 1990-03-16 CA CA002056357A patent/CA2056357C/fr not_active Expired - Lifetime
- 1990-03-16 DE DE69006496T patent/DE69006496T2/de not_active Expired - Fee Related
- 1990-03-16 WO PCT/FR1990/000176 patent/WO1990011069A1/fr active IP Right Grant
- 1990-03-16 ES ES90904856T patent/ES2051013T3/es not_active Expired - Lifetime
- 1990-03-16 US US07/761,809 patent/US5286629A/en not_active Expired - Lifetime
- 1990-03-16 JP JP2504959A patent/JP2856547B2/ja not_active Expired - Fee Related
Patent Citations (5)
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EP0028917A2 (fr) * | 1979-11-08 | 1981-05-20 | Merck & Co. Inc. | Vésicules lipidiques porteuses de surfaces carbohydratées et utilisées comme véhicules à action directe sur la lymphe pour des substances thérapeutiques et de diagnostic, leur utilisation et procédé pour leur préparation |
WO1986005789A1 (fr) * | 1985-04-01 | 1986-10-09 | Biocarb Ab | Derives d'hydrates de carbone et leurs compositions pour usage diagnostique ou therapeutique, et leurs procede d'utilisation |
WO1987005300A2 (fr) * | 1986-02-28 | 1987-09-11 | Biocompatibles Limited | Conservation de proteines |
EP0285178A2 (fr) * | 1987-04-03 | 1988-10-05 | Meito Sangyo Co., Ltd. | Dérivés de mannobiose |
FR2609397A1 (fr) * | 1988-02-23 | 1988-07-15 | Serobiologiques Lab Sa | Utilisation d'une substance ou composition de nature glucidique comme principe actif d'une composition dermatologique et/ou cosmetologique et/ou pharmaceutique et/ou stimulante cellulaire, et composition contenant une telle substance ou composition de nature glucidique |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
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US5846561A (en) * | 1991-02-14 | 1998-12-08 | Baxter International Inc. | Method of binding collagen recognizing substances to liposomes |
US5603872A (en) * | 1991-02-14 | 1997-02-18 | Baxter International Inc. | Method of binding recognizing substances to liposomes |
JP3321622B2 (ja) | 1991-02-14 | 2002-09-03 | バクスター・インターナショナル・インコーポレイテッド | 生体接着性リポソームの外用による持続的薬物放出 |
WO1992014447A1 (fr) * | 1991-02-14 | 1992-09-03 | Baxter International Inc. | Liaison de substances de reconnaissance et de liposomes |
US5401511A (en) * | 1991-02-14 | 1995-03-28 | Baxter International Inc. | Binding of protein and non-protein recognizing substances to liposomes |
EP0535534A1 (fr) * | 1991-10-02 | 1993-04-07 | Eastman Kodak Company | Emulsion de particules biocompatible |
US5455232A (en) * | 1992-02-04 | 1995-10-03 | Piljac; Goran | Pharmaceutical preparation based on rhamnolipid |
BE1005704A4 (nl) * | 1992-02-04 | 1993-12-21 | Piljac Goran & Piljac Visnja | Farmaceutisch preparaat op basis van rhamnolipide. |
WO1993014767A3 (fr) * | 1992-02-04 | 1993-09-02 | Innovi Nv | Preparation pharmaceutique a base de rhamnolipides utilisee pour traiter les maladies dermatologiques, par exemple, les infections du virus du papillome |
US5514661A (en) * | 1992-04-10 | 1996-05-07 | Piljac; Goran | Immunological activity of rhamnolipids |
US5510120A (en) * | 1992-04-15 | 1996-04-23 | Unilever Patent Holdings B.V. | Cosmetic composition for topical application to skin or hair |
EP0566368A3 (en) * | 1992-04-15 | 1994-01-12 | Unilever Plc | Cosmetic conjugate |
US5814343A (en) * | 1992-04-15 | 1998-09-29 | Unilever Patent Holding B.V. | Cosmetic composition |
WO1996002233A1 (fr) * | 1994-07-20 | 1996-02-01 | Goran Piljac | Activite immunologique des rhamnolipides |
FR2730409A1 (fr) * | 1995-02-15 | 1996-08-14 | Dior Christian Parfums | Utilisation des galactolipides, en particulier galactosylglycerides, et des extraits d'origine naturelle contenant ces produits, dans les domaines cosmetiques, pharmaceutique et notamment dermatologique |
WO1996025142A1 (fr) * | 1995-02-15 | 1996-08-22 | Parfums Christian Dior | Utilisation des galactosylglycerides et des extraits d'origine naturelle contenant ces produits, dans les domaines cosmetique, pharmaceutique et notamment dermatologique |
EP1043016A1 (fr) * | 1999-03-30 | 2000-10-11 | Sodic Sa | Extrait de plante basé sur le glyceride, leur procédé de préparation et compositions cosmétiques les renfermant |
US6576266B1 (en) | 1999-03-30 | 2003-06-10 | Sodic Sa | Plant extract based on glycerides, a method for the preparation of this extract and a cosmetic composition containing the same |
WO2001078663A3 (fr) * | 2000-04-14 | 2002-05-30 | David S Soane | Produits de traitement capillaire nanoscopiques |
US6821509B2 (en) | 2000-04-14 | 2004-11-23 | Cosmetica, Inc. | Nanoscopic hair care products |
US7968084B2 (en) | 2000-04-14 | 2011-06-28 | Boston Cosmetics, Llc | Nanoscopic hair care products |
EP1351694B2 (fr) † | 2001-01-19 | 2011-07-27 | Ueni Medica | Favorisation de la reconstruction cellulaire et/ou de la differenciation cellulaire avec sucre non metabolisable et un absorbant polymerique |
Also Published As
Publication number | Publication date |
---|---|
FR2645741B1 (fr) | 1995-06-23 |
FR2645741A1 (fr) | 1990-10-19 |
ES2051013T3 (es) | 1994-06-01 |
JP2856547B2 (ja) | 1999-02-10 |
CA2056357A1 (fr) | 1990-09-21 |
CA2056357C (fr) | 2002-01-08 |
DE69006496T2 (de) | 1994-08-18 |
US5286629A (en) | 1994-02-15 |
DE69006496D1 (de) | 1994-03-17 |
EP0464077A1 (fr) | 1992-01-08 |
EP0464077B1 (fr) | 1994-02-02 |
JPH04504120A (ja) | 1992-07-23 |
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